Description: 这个软件包(C++)是我寻找电磁学代码无意中找到了，功能相当强大（并行计算，快速多极子等）。缺点是安装相当麻烦，需要若干个其他软件包。我在Fedora Core9下编译其中所需blitz++时出错，在 ubuntu下可以所有均编译通过，运行时出现一个错误，我找不到原因（本人水平有限），但从学习电磁学有关算法／程序设计来说，已经是相当了不起的开源软件了。parallel unified multipole algorithm for Electromagnetics (Puma-EM).
Aim is providing surface Method of Moments for Electromagnetics, enhanced
by using the Multilevel Fast Multipole Method. Code is parallelized and runs on
Desktops and clusters.-The package (C++) Is what I look for electromagnetics code inadvertently found, quite powerful (parallel computing, fast multipole, etc.). The disadvantage is that installation can be tricky, would require a number of other packages. I compiled under Fedora Core9 which required blitz++ Error in ubuntu can compile all are passed, there is a runtime error, I can not find the reasons (my limited), but to learn the relevant algorithms Electromagnetics/program design, is already quite a remarkable open-source software. parallel unified multipole algorithm for Electromagnetics (Puma-EM). Aim is providing surface Method of Moments for Electromagnetics, enhanced by using the Multilevel Fast Multipole Method. Code is parallelized and runs on Desktops and clusters. Platform: |
Size: 427008 |
Author:hopeshot |
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Description: 快速多级子算法，类似与FFT的加速！
快速多级子算法，类似与FFT的加速！-fast multipole method！
Very fast and complex！
fast multipole method！
Very fast and complex！ Platform: |
Size: 267264 |
Author:w 34rtg |
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Description: A new method for periodic scattering problems using 2nd kind boundary integral equations and the free-space Green s function, adding extra degrees of freedom on the unit cell walls, and imposing quasi-periodicity in an expanded linear system.-A new method for periodic scattering problems using 2nd kind boundary integral equations and the free-space Green s function, adding extra degrees of freedom on the unit cell walls, and imposing quasi-periodicity in an expanded linear system. This avoids the problems with the standard approach, namely: the quasi-periodic Green s function is slow to evaluate, it diverges at Wood s anomalies, and it does not handle large aspect ratios well. Our new approach cures all three issues, and can easily be `wrapped around an existing code (e.g. fast-multipole acceleration) for the isolated-obstacle scattering problem.
It includes the latest talk slides: "A new integral representation for quasi-periodic scattering problems in two dimensions" Platform: |
Size: 7395328 |
Author:李灵 |
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Description: 3D Kernel independent fast multipole method. 此算法为上世纪十大算法之一，这是对于矩阵计算的O(N)的快速算法。-3D Kernel independent fast multipole method. Algorithm is one of the top ten algorithms of the last century, this is a fast algorithm for matrix calculation of O (N). Platform: |
Size: 37888 |
Author:Zero |
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Description: an adaptive quite general fast multipole method in 2 dimensions with a nice Matlab-interface. Platform: |
Size: 57344 |
Author:apanaseonok |
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Description: 本文利用Ping-Liang Rui，Ru-Shan Chen提出的一种基于多层快速多极子（MLFMA）谱域两步预处理方法，来求解在单站RCS计算时产生的有多个右边项的大型线性方程组。-In this paper, Ping-Liang Rui, Ru-Shan Chen proposed based on multilevel fast multipole (MLFMA) spectral-domain two-step pretreatment method to solve the monostatic RCS calculations have produced a large number on the right items linear Equations Platform: |
Size: 602112 |
Author:yangkai |
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Description: 多层快速多极子算法中的关键技术代码,希望对你们有用,不是很完整-fmm hopefast multipole method！ Very fast and complex！ fast multipole method！ Very fast and complex！ Platform: |
Size: 6144 |
Author:潘龙 |
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Description: 为精确求解散射问题,采用混合场积分方程(CFIE)、多层快速多极子算法(MLFMA)和共轭梯度算法(CG)的收敛技术。基于传统多层快速多级子算法,详细研究了二维拉格朗日插值节点数对计算精度的影响,并改进了插值方法,在不同的层采用不同的插值节点数 提出了在不同的层采用不同的精度控制来计算多级子模式数 分析了稀疏矩阵的对称性对内存使用的影响以及磁场积分方程对迭代初始值的选择。数值计算结果表明以上改进可较大幅度地提高计算精度和计算效率,同时降低内存使用,可满足复杂目标电磁散射计算要求。-Precise scattering problem solving, mixed field integral equation (CFIE), multilevel fast multipole algorithm (MLFMA) and conjugate gradient algorithm (CG) convergence technology. Based on the traditional multilevel fast multilevel sub-algorithm, a detailed study of the impact of the number of nodes on the two-dimensional Lagrange interpolation calculation accuracy, and improved interpolation method in different layers with different interpolation nodes presented in a different layers with different precision control to calculate the number of multi-level sub-patterns analysis of the symmetry of the sparse matrix effects on memory usage as well as the choice of the magnetic field integral equation iterative initial value. Numerical results show that these improvements can greatly improve the computational accuracy and efficiency while reducing memory usage, which can meet the requirements of complex electromagnetic scattering calculation. Platform: |
Size: 4096 |
Author:王刚 |
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Description: Kernel independent fast multipole method, directional fast multipole method and their applications in fast boundary element analyses. Platform: |
Size: 13455360 |
Author:Carl |
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Description: wfmm_WFMM Openmp version wideband FMM for 2D complex Helmholtz equation.zip-This is the code for the Wideband Fast Multipole Method for 2D Helmholtz equation.testrun.c is a test or demonstration file to use wfmm() . By modifying testrun.c file, the Wideband FMM can be used. Instruction1.Unzip the file wfmm.zip.2.Compile with gcc version 4.2 or newer (GNU compiler) by typing >> make3.Run>>./testwfmm4.Output will be save in the fmmlog.txt fileIn default, N 300*300 in [-10, 10]^2 box, k.re 1.0, k.im 0.0, and NT 8 (number of cores, defined in wfmm.h ) are used. The error in fmmlog.txt file must be around 5.043416e-07. It will slightly vary depending on machine and compiler version. (The sample_output.pdf file is one of fmmlog.txt file)Also note that the CPU time for FMM and direct calculation will be differ the table depending on the computers and complier.In order to generate table in the paper, change N, k.re and k.im in the testrun.c file to the number specified in the table and th Platform: |
Size: 60416 |
Author:doryan ninenine |
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